Q: 70 (CDS-I/2005)

Consider the following eye disorders
1. Cataract
2. Colour blindness
3. Night blindness
Which of the above disorders is/are essentially genetic in nature ?
question_subject: 
Science
question_year: 
2005
question_exam: 
CDS-I
stats: 
0,296,384,104,336,48,192